# stepfun-ai/Step-3.5-Flash

Model from Hugging Face for text generation: stepfun-ai/Step-3.5-Flash · transformers

## Facts

- Type: LLM
- Task: text-generation
- Framework: transformers
- License: apache-2.0 — Permissive open license: commercial use, modification, and redistribution are permitted. (https://spdx.org/licenses/Apache-2.0.html)
- Source: https://huggingface.co/stepfun-ai/Step-3.5-Flash
- Hosting: hosted (58 files)
- Files: 58 hosted of 116 listed
- File counts: "listed" is every file in the source repository; only hosted files download from Hugging Bay, and the download plan lists the files it selects for one download, so its count can differ.
- Hosted here: at least 58 listed files; full count and size unknown
- Full repo upstream: 398.8 GB
- Download: https://huggingbay.xyz/artifact/hf-model-stepfun-ai-step-3-5-flash/files (download plan: https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/download-plan)
- Per-file SHA-256: available for 54 of 58 hosted files via https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/files?limit=100
- Run-ready: no (Hugging Bay has not certified a run path for this model; hosted bytes are downloadable and hash-checkable only)
- Peer-assisted fallbacks: 0 verified, 0 pending review
- Downloads: 205532
- Stars: 838
- Card completeness: 89%

## Description

External Hugging Face catalog record for stepfun-ai/Step-3.5-Flash. Task: text generation. Library: transformers. Files we host have a published SHA-256.

## Model Card Facts

- Declared license: apache-2.0
- Pipeline: text-generation
- Library: transformers
- Task categories: text-generation
- Paper ids: 2602.10604, 2601.05593, 2507.19427
- File hints: 16 upstream file samples

## Referenced Data

- Paper: 2602.10604
- Paper: 2601.05593
- Paper: 2507.19427

## File Hints

- .done
- .eval_results/gpqa_diamond.yaml (196 B)
- .eval_results/hle.yaml (206 B)
- .eval_results/mmlu_pro.yaml (200 B)
- .eval_results/swe_bench_verified.yaml (222 B)
- .eval_results/terminal_bench_2.yaml (223 B)
- .gitattributes (1.5 KB)
- README.md (26 KB)
- chat_template.jinja (4.9 KB)
- config.json (4.8 KB)
- configuration_step3p5.py (2.2 KB)
- model-00001.safetensors (9.0 GB) LFS

## Quality Checklist

- Summary: passed
- Description: passed
- Model card metadata: passed
- License: passed
- Provenance: passed
- File inventory: passed
- Hosted bytes: passed
- Scan result: pending
- Manifest signature: passed

## Safety Notes

- External catalog metadata imported from Hugging Face public API on 2026-10-02T04:18:03.489Z.
- Open license detected as apache-2.0.
- Not a run kit: hosted, hash-checked bytes only; run readiness is not certified for this model yet.

## Actions

- Web: https://huggingbay.xyz/artifact/hf-model-stepfun-ai-step-3-5-flash
- Files API: https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/files?limit=100
- Metadata: https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/metadata.json
- Distribution: https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/distribution
- Manifest: https://huggingbay.xyz/api/manifests/hf-model-stepfun-ai-step-3-5-flash
- Download plan (per-file SHA-256 + signed download URLs): https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/download-plan
- Hosted download rows: https://huggingbay.xyz/api/downloadable-files?artifactId=hf-model-stepfun-ai-step-3-5-flash&limit=100
- Request mirror: not applicable.
- Submit peer fallback for review: POST https://huggingbay.xyz/api/artifacts/hf-model-stepfun-ai-step-3-5-flash/decentralized-fallbacks